Charles j



(No Model.) l A C. J. MAGRAE. ADJUSTABLE MUSIC STAND.

No. 502,980.Y Patented Aug. 8, 1893.

`NITED STATES PATENT EEIcE.

cHARLES J. MAoRAE, 0E s'rgLoUIS, MISSOURI, ASSIGNoR 0E THREE-EoUR'rHS ToEDMUND J. PIPER AND HERMAN H. RoLLMAIv,v oE SAME PLACE.

ADJUSTABLE MUSIC-STAND. y

SPECIFICATION forn'ing'partof' Letters Patent Naeoaeso, Ytratta August8,1893.

- Application filed August 15, 1892.

To all whom it may concern:

Be it known that I, CHARLES J. MACRAE, of the city of St. Louis andState of Missouri,1 have invented certain new and useful Im provementsin Automatic Adjustable Musicf Stands, of which the following is a full,clear, 1 and exact description, reference being had to the accompanyingdrawings, forming a part; hereof.

My invention relates to improvements in adjustable music-stands, andconsists in: the novel arrangement and combination of parts as will bemore fully hereinafter V-described and set forth in the claims. The mainfeatureof my improvement lies In the construction of a music-standwhich' carries parts adapted to be automatically i locked in adjustedposition, and which at the.: same time has such a relative combinationand arrangement of other parts, that whenf not in use, the completedevice may beso ad-l justed as to fit into a very small and convenientspace for carrying.

The employment of a device whibh in op-j eration allows of the adjustingof the 'stand to any desired height and at the same time, 1 the changingof lthe incline of the musictable, with the same movement, forms acombination which has heretofore not been employed in this line ofmanufacture.

Other features which /will be more fully, hereinafter set forth, conformto expedite the i operation of the complete device.

In the drawings: Figure 1 is a vertical sectional View of my completeinvention with parts broken away, to show the relative po sition ofother` parts. Fig. 2 is a front detail i View of my complete invention.Fig. 3 is an enlarged detail View of the table segment, by means ofwhich the table is secured adj ust ably. Fig. 4 is a detail View inperspective of a rod, pawl and means for operating same Fig. 5 is adetail sectional view of theVeccentrically pivoted cam, made use of incarrying out my invention. Fig. 6 is atransverse`sec tional view on theline :o-x Fig. 1. i

Referring to the drawings: 1 indicates my complete vinvention having twocylindrical? shaped barrels 2 and 3, and said barrel 3 lfltf; tinginside of and having a frictional bearg ears are providedwith slots 9.

ing in said outer barrel 2. The upper end of Serial No. 443,158. (Nomodel.)

said outer barrel 2 is open in construction and provided with twolongitudinal slots 4 and 5, located at opposite sides of the barrel, andsaid slot 5 extending downwardly farther than the slot 4, for purposesmore fully hereinafter described. Thelower end G of said outer barrel 2,is closed bya cap 7 provided witlIa number of ears'S, (preferably three)and said A slidingcollar 10, upon the outside of the outer barrel 2 isprovided with projecting ears 11 in relative alignment with the slots 9and to said ears are pivoted depending legs or standards 12 yvhichproject downwardly through the slots 9, and have upon their outer endsrubberlballs 13 to facilitate and guarantee the steady position of thecomplete device upon the floor. The operation and function of thisconstruction will be described in the operation of my invention, andpart of this construction consistsin'an adjustable thumbscrew 14 in saidcollar 10.

' The inner barrel 3 is provided near its lower end, and in itsperiphery with aslot 15 through which the' cam (16) eccentricallypivoted on a pivot 17, projects, and the milled edge 18, of which isindirect contact with the inner periphery of the outer barrel 2. Asshown g in Fig. 5, the cam-disk 16 is secured upon the pivot or shaft17, immediately in the center of the interior of the barrel 3 and has apivot 19 near its Vupper edge upon which a rod 2O projecting upwardly,oscillates, and also to said pin 19 is secured one end of a spring 21,the other end of which is secured to a lug 22 upon the interior of thebarrel 3 and immediately above the slot 15. Said rod 2O projectsupwardly and has its end tapered to form a pawl 23. Near the upper endof said rod 20, it passes through and is secured to a thumb-lever 24operating in a slot 25, in the periphery of the barrel 3, and said lever24 has its rear end pivoted to a lug 26 upon the interior of said barrel3, and immediately above which is a slot 27 coinciding in transversealignment with the slot 25, but the same is not of such a depth as vsaidlslot 25. The upper end Vof said barrel 3 terminates in two castings 28,which provide abearing-for the shaft 29 and through and between whichextend the slots 25 and 27, forming a space for the operation of thetooth segment 30, mounted upon said shaft 29. Said toothed-segment 30 isprovided with teeth 31 upon its periphery and also with teeth 32 uponits side and adjacent the periphery. This construction, while Ipreferably use the side teeth 32, strengthens the entire segment byhaving the teeth 31 upon the periphery.

The object of employing the teeth upon the side is to provide for thevariations in the position of the rod 20, caused by the varying positionof the cam 16 to which said rod is attached. The rod 2O is thussusceptible of greater longitudinal play, owing to the degree offriction of the cam 16 when locked, without disengagement from theteeth, than would be the case were the upward movement of the rod 20limited by contact with the plate 30.

Secured upon the upper cross-frame 33 of the segment 30, is a circulariiat plate 34 which has a number of projecting ears 35 upon itsperiphery, each of which is provided with a perforation 36, throughwhich a num ber of rods 37 and 3S are placed, said rods with theexception of three indicated by the numeral 39, being provided withballs 40, upon one of their ends, while the other ends are provided witha bent or seto portion 41 terminating with a similar ball 40. The threerods indicated by 39 are provided upon both to the outline formed by thearms 37 and complete a rack for holding the music which is kept fromsliding downwardly and oft the rack by the bent portions 41 upon theouter ends of the rods 39.

The object of constructing the rods 37, 3S, and 39 with their inner endsprovided with a bent portion 41 and terminating with balls 40,

is to provide a joint, adjustable, and by means of which the bars mayeither be in a fiat relative position with the table 34 or may beallowed to slide down through the slots in the ears 35 and normally lieagainst the outer barrel 2, when it is desired to pack the device fortransferring.

The object of constructing the table-rod with balls or otherenlargements upon their ends is as follows: Vtfhen the bars are adjustedin a horizontal position said balls render the rods fixed, that is, theyprevent said rods from slipping downwardly, by reason of the bentportion 41, which is of the length of the thickness of the ears 35, andwhen the rods are in a vertical position, said balls prevent the rodfrom slipping through the perforations 36 in said ears 35.

The operation of my invention is as follows:

As will be seen in Fig. 1, the slots 25 and 27 are to allow theoperation of the segment 30, as hereinafter described, and the slots 4and .5 allow the segment 30 to drop far enough into the barrel 2 so thatthe table 34 will be practically adjacent to the top ot said barrel 2when the instrument is closed, and the arms 37, 38, and 39 depending andadjacent the barrel 2. As seen in Fig. 1, when the entire stand is inposition, the standards 12 depend through the slots 9 in the ears 8 andby reason of the length of said slots 9, the rods 12 when pushed at anangle from the plane of the barrel 2, are bound against the walls ofsaid slots 9 and prevent the collar 10 from slipping up the barrel 2 andthe position of the collar 10 is furthermore guaranteed by the operationof the thumb-screw 14. `When it is desired to fold up the instrument forpacking, said thumb-screw 14 is released and the collar 10 is pushed upthe barrel 2, carrying said rods 12 through the slots 9, with it untilnothing but the rubber balls 13 protrude below the ears8.

It will readily be perceived that the entire device is in a com pactform and can be packed into a very small case as is usual in thehandling oi the present style of music-stands, the length of the devicecomprising but very little more than the length of the barrel 2, as thebarrel 3 and its accompanying parts recede into said barrel 3, upon theoperation of the cam 16.

'lhe principle involved in the employment of the eccentrically pivotedcam 16 is well known, and With the following explanations, the operationof same in connection with my device will be more fully understood.Referring to Fig. 1 in which said cam is shown in its relative position,it will be seen that the same is pivoted near one side, and opposite theedge of same which is milled and comes in contact with the interior ofthe barrel 2. The natural tendency of the cam 16 is to bear upwardlywith its free or eccentric portion against the barrel 2, such movementof the eccentric heilig assisted by the spring 2l, which naturally tendsto keep the cam up. At the same time that the position of the cam locksthe barrel 3 in a position in the barrel 2, the rod 2O pivoted to saidcam 16 is held in a rigid position with its pawl end 23 engaging theteeth upon the segment 30. By pushing down upon the thumb-lever 24 thepawl 23 is brought out of engagement with the teeth upon the segment 30and the table can be tilted to any desired incline, when the lever isreleased and the pawl 23 re-engages the teeth and holds the table in afixed position. The downward movement of the lever 24 by its connectionwith the rod 20, pushes down thc cam 16 and releases the contact betweenthe milled edge 18 of the'said cam 16 and the interior of the barrel 2,and allows the barrel 3 with its accompanying parts to slide downwardlyinto the barrel 2.

Having described my invention, what I claim is IOO IIO

l1. In anV adjustable music stand, the comblnation, with a tubularvsupport, an adjustable member working therein, and a music tablepivotally mounted on said adjustable member and carrying a segmentalrack plate, of a locking cam carried by the adjustable member, a rodhaving one end pivotedto the cam andthe opposite end adapted to engagesaid rack plate, and means for operating said rod; substantially as andfor the purpose set forth.

2. In an adjustable music stand, the combination, with a tubularsupport, and a tubular adjustable member working therein and provided atone side its periphery 'and near its lower end with a vertical slot, ofa cam journaled in said adjustable member opposite the slot, said cambeing adapted to automatically bind against the inner surface ot' thesupport, and means for releasing the cam; substantially as and for the'purpose set forth.

3. In an adjustable music stand, the combination, with a tubularsupport, a tubular adjustable member working therein and provided nearits lower end with a slot, and a music table pivotally mounted on saidadj ustable member and provided with a segmental rack plate, of avertically-arranged, spring-held cam mounted in said adjustable memberand opposite the slot therein, a rod pivotally connected at one end withthe cam and having its opposite end adapted to engage the rack-plate,and an operating lever fulcrumed Within the adjustable member andsecured to the rod; substantially as and for the purpose set forth.

4. An adjustable music-stand having a barrel 2 a barrel 3, a slot 15 inthe periphery of the barrel 3 near its lower end, an eccentricallypivoted vertically arranged cam mounted upon a pivot 17, withinsaidbarrel 3, and protruding through said slot 15 to bind against the innersurface of the barrel 2, with its roughened periphery 18, substantiallyas set forth.

5. An adjustable music-stand having telescoping barrels 2 and 3, a musictable carried by the latter and provided with a segmental rack-plate 30a cam 16 operative to hold the barrel 3 in which said cam is pivoted, ina fixed position within said barrel 2, a shaft 19, a rod 2O mounted uponthe latter and having its free end adapted to engage the rack plate 30,a spring 21 fastened to said shaft 19, the opposite end of said spring21 secured to a lug 22 upon the interior of the barrel 3, and saidspring 21 assisting the cam 16 in its tendency to permanently engage thesurface of the barrel 2, substantially as set forth.

6. An adjustable music-stand having telescoping barrels 2 and 3, a musictable carried by the latter and provided with a segmental rack plate 30a cam 16, a shaft 19 near its upper periphery, a rod 2O secured to saidshaft 19, the upper end of said rod 20 being shaped in the form of apawl 23, a thumb-lover 24 secured to said rod, said thumb lever pivotedat one end to lugs 26 upon the interior of the barrel 3, and theoperation of saidthumb-le- Ver releasing the engagement between the cam16 and the interior of the barrel 2, substantially as set forth.

7. An adjustable music-stand having a barrel 3 provided upon its upperend with projecting standards 28, an open space between said standards28, terminating in slots 25 and 27 in said barrel 3, a shaft 29 inbearings in said standards 28 a toothed-segment 80 mounted upon saidshaft 29, a music table carried by said segment, a pawl 23 adapted toengage said segment, and means for operating the pawl substantially asset forth.

8. An adjustable music-stand having a number of table-rods 37, 38, and39, one end of each rod provided with a bent portion 41, said rods 39,having bent portions 41 at their opposite ends to prevent the sliding ofthe music from the table, and both ends of said rods 37, 38, and 39provided with enlarged portions or balls 40, substantially asl setforth.

9. As an improvement in music stands, a

music table comprising a plate. 34 providedA with apertured ears 36, androds Working in said apertures and provided with headed ends and a bentretaining portion 41, said rods being of varying lengths whereby whenadjusted a table of rectangular outline is formed; substantially as andfor the purpose set forth.

10. In an adjustable music stand, the combination, with a supportprovided with a cap 7 at its lower end, said cap having radiallyarrangedslots 9, of a collar 10 sliding on the support, and supporting standards12 pivoted to said collar and passing respectively through the slots 9;substantially as and for the purpose set forth. j

11. In an adjustable music stand, the combination, with a supportprovided at its lower end with radially-projecting, slotted lugs 8, of acollar 10 sliding on said support, and supporting standards 12 pivotedto said collar and projecting through the slots in the respective lugs,said standards being provided with yielding or elastic feet;`substantially as and for the purpose set forth.

12. An adjustable music-stand having a barrel 2, a cap 7 provided withprojecting ears 8 having slots 9 a collar 10, having a number ofstandards l2 depending therefrom, through said'slots 9 and a thumb-screw14 in said collar 10 and said collar and accompanying parts slidinglyadjustable upon the outside of said barrel 2, substantially as setforth.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES J. MACRAE. Witnesses:

HERBERT S. ROBINSON, ALFRED A. EioKs.

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